Blew the capacitor on my analytical balance scale using the wrong power adapter. I need help finding a replacement compatible capacitor to buy. Will any 100uf 40v capacitor work as a replacement?
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You can get the capacitor from anywhere, like Digikey, Mouser etc. 100µf 50 v 105° are very common Hope nothing else got damaged like that IC.
Just measure the size to get one that will fit.
The ic seems to be a LT1172cs8Last edited by R_J; 12-28-2024, 11:45 AM. -
cool thanks. ill get the 100µf 40 v 105° from digikey. Can you tell me why you recommend a 100µf 50 v 105° instead of a 100µf 40v capacitor? For the ic how did you come with the LT1172cs8 model? It does have the same dimensions as the one on my board. What does the 940 numbers mean on this ic? if the smd components further down the pcb board from the blown capacitor have continuity starting from the power input to those components does that mean they are not shorted or blown including this ic?Comment
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there are standard values and unusual ones.
standard ones include 35v and 50v, 40v is going to be harder to find.
50v is better anyway because it's the maximum so you get more headroom with a 50v part.
try using panasonic FR series.
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The IC was probably damaged too so if you haven't already made an order I would add it as well.
(The reasoning being it is rated for 40v input just like the capacitor so if the capacitor failed the IC very likely did too)."The one who says it cannot be done should never interrupt the one who is doing it."Comment
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Thanks for the help everyone. An update on this, Ive replaced the capacitor with one of these panasonic 100 µF 50 V and the scale didnt turn on. 😐Ill be ordering the ic and testing that out next. https://www.digikey.com/en/products/...FC1H101/266332Comment
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It was the switch regulator chip. I replaced the chip and now the scale worksComment
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Anyone know of a compatible replacement that has an adjustable output? The BD35230 has a fixed output of 1.0V and would be acceptable but I cannot find it anywhere. There is also the BD3523 which has an adjustable output but its also nowhere to be found. I could probably source them from alibaba but I dont have that much time and I dont want to make a huge order.
Or perhaps you know how the BD35231 can be modified to output 0.95-1.0V? The board does have empty pads for an adjustable IC but Ive only been able to make the output go up.
Thanks for any help... -
Hi everyone,
I’m trying to identify a step-down regulator marked AMCH073. It’s used on the PEX power rail of a graphics card. I can’t find any datasheet or info online.
Here’s what I’ve observed:
• It has a QFN-16 footprint, similar to NB670.
• Pins 1, 2, 15, 16 are connected together and go to the inductor, so likely SW (switch node).
• Pin 9 is connected to GND, which doesn’t match NB670 (where pin 9 is SW).
• Pin 8 also seems to be tied to the same GND plane.
• The chip only says AMCH073, no manufacturer logo or other markings.... -
Hi there, looking for a compatible replacement for a diode type labelled "V6 18" from a dead Panasonic plasma TV power source. Possibly a V6 600 volts diode as seen here: https://electronics.stackexchange.co...nt-diode-v6-88 ?
Thank you
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